The Code states: “In congested conditions, where adjacent lanes of traffic are moving at similar speeds, traffic in left-hand lanes may sometimes be moving faster than traffic to the right.
Finally, do not cross any solid white lines that separate the lanes on a motorway as they are there to keep you in the right lane before merging onto the road – if you do cross the solid lines, it could result in a crash.
“In these conditions you may keep up with the traffic in your lane even if this means passing traffic in the lane to your right.
However, do not ‘hog’ the middle lane as it can upset the flow of traffic on the motorway and could lead to an accident.
Drivers who obey the rules of the road will know that after passing a vehicle on a motorway, you should move back to the left after completing an overtake.
